Table 1 Baseline characteristics of the AS patients with hip involvement undergoing THA
Baseline characteristic | Valuesa | Rangeb |
|---|---|---|
Clinical characteristics | ||
 Age (years) | 32 | 19 to 67 |
 Male (n, %) | 218 (89.7%) |  |
 BMI (kg/m2) | 22.64 | 11.87 to 37.11 |
 Disease duration (years) | 11 | 0.5 to 40.3 |
 Hospital stay (days) | 11 | 6 to 46 |
 Smoking history (n, %) | 38 (15.6%) |  |
 Bilateral THA (n, %) | 163 (67.1%) |  |
 Hip ROM = 0°(n, %) | 121 (49.8%) |  |
 BASRI-hip (number of cases at involved hip) |  |  |
  3 (n, %) | 178 (43.8%) |  |
  4 (n, %) | 228 (56.2%) |  |
Preoperative laboratory values | ||
 Elevated ESR level (> 15 mm/h for male and > 20 mm/h for female, n, %) | 132 (54.3%) | 1 to 99 |
 Elevated CRP level (> 1 mg/dL, n, %) | 165 (67.9%) | 0.1 to 11.6 |
 TT (s) | 16.1 ± 1.0 | 12.3 to 19.4 |
 APTT (s) | 40.4 ± 4.9 | 30.3 to 54.0 |
 PT (s) | 13.5 ± 0.8 | 11.4 to 16.2 |
 PT (%) | 94.4 ± 12.0 | 63.6 to 123.0 |
 INR | 1.05 ± 0.08 | 0.88 to 1.30 |
 Fibrinogen level (g/L) | 4.23 | 1.76 to 13.10 |
 Platelet level (× 109/L) | 273 ± 72 | 103 to 509 |
 Hb level (g/L) | 133 ± 16 | 90 to 171 |
 Hct (L/L) | 0.404 ± 0.043 | 0.284 to 0.512 |
Perioperative data | ||
 Periprosthetic fracture (n, %) | 10 (4.1%) |  |
 Iliopsoas and adductor release (n, %) | 41 (16.9%) |  |
 Administration of TXA (n, %) | 159 (65.4%) |  |
 Chemoprophylaxis of thrombosis (n, %) | 183 (75.3%) |  |
 Autologous transfusion (n, %) | 66 (27.2%) |  |
  Unilateral THA (n = 80) | 11 (13.8%) |  |
  Bilateral THA (n = 163) | 53 (32.5%) |  |
 Allogenic transfusion (n, %) | 229 (94.2%) |  |
  Unilateral THA (n = 80) | 67 (83.8%) |  |
  Bilateral THA (n = 163) | 162 (99.4%) |  |
 Operating time (min) | 180 | 55 to 455 |
  Unilateral THA | 90 | 55 to 285 |
  Bilateral THA | 205 | 70 to 455 |
 CBL (mL) | 1223 ± 542 | 162 to 3098 |
  Unilateral THA | 790 ± 342 | 162 to 1901 |
  Bilateral THA | 1435 ± 495 | 453 to 3098 |